Gaseous-fuel burner



' 1 1,6115051 Feb. 1,1927. J. E KRESKY,

GAsEQUs FUEL BURNER Filed ct. 2. 1924 2 15116915.5116 1 Patented Feb. 1,1927.

JESSE E. KRESKY, OF PETALUMA, CALIFORNIA.

eAsEoUs-EUEL BURNER..

Application filed October 2, 1924. Serial` No. 741,148,

AThe invention relates to that type of burner wherein the heat producedis partly utilized to change liquid fuel into vaporous fuel which isconsumed at the burner fuel outlet.

An object of the invention is lto provide a burner which may be adjustedto it fire boxes or other containers of different size.

Another object of the invention is to provide a high capacity burner inwhich there is a free flow ofair to all of the fuel release apertures,so that perfect combustion of the fuel occurs.

Another object of the invention is to provide a vaporous fuel generatingburner in which'the temperature of the generator is maintained below thetemperature of the ame, so that the generator will not become fouledwith carbon as rapildy as do generators which are subjected to thedirect action of the ame. Another object of the inventionv is to providean improved generator which may be readily cleaned and which isconstructed since the invention,as set forth in the claims,

features,

to'prevent the passage of solid particles to discharge outlet,

vide a gaseous fuel burner having fuelrelease apertures formed to permitthe release of large quantities of fuel without the liability ofbackfire into the burner.

The invention possesses other advantageous some of which with theforegoing, will be set forth at length in the following description,where I shall outline in full that form of the invention which I haveselected for illustration in the drawings accompanying and forming partof thev resent specification. In said drawings I liave shown one form ofburner embodying my invention, but it is to be understood that I do notlimit myself to such form.

may be embodied lin a plurality of forms.

Referring to said drawings: Figure 1 is va plan or top view of theburner of my invention.

Figure 2 is a side elevation of the burner.

Figure 4 is alongitudinal vertical section of the burner taken on theline 4+4 of Figure 1.

Figure 5 is a cross section ofthe burner taken on the line 5 5 of Figure2, and showing in dotted lines the extended position of one ofthe fuelchambers.

Figure 3 is an end elevation of the burner.`

Figure 6 is a top view ofa portion of one of the fuel chambers, Figure 7is a longitudinal section through one end of the generator tube, showingthe fuel distributor therein.

The burnerv of my invention is particularly adapted for the consumptionof 'a vaporous or gaseous fuel which has been produced from a liquidstock, such as kerosene, distillate and other grades of liquid fuel. Theliquid fuel is introduced into a generator or retortin which it isvaporized and the vaporized fuel discharges through a throat wherein itbecomes mixed with air, into a mixing chamber in which a homogeneousmixtureof the fuel and air is produced. The resultant mixture is thecombustible fuel. From the mixing chamber, the combustible mixturepasses into fuel chambers provided with fuel release apertures and thefuel burns at these apertures.

The burner of my mixing chamber 2, closed at its forward end by a wall 3having an aperture therein in which there is disposed a longitudinallyadjustable throat 4. The vaporized fuel is discharged through a nozzletoward the throat and, in entering the throat, induces a flow of airinto the throat so that a mixture of air and vaporized fuel isdischargedinto the mixing chamber. The throat 4 is provided with a bail5 whereby its position may be longitudinally adjusted and varying theposition of the throat, the proportion of air and vaporous fuel in themixture may be varied. The top and side walls of the mixing chamber 2extend beyond the end wall Sthereof to form a hood 6 which shields thestream of vaporous fuel discharg ing from the nozzle into the throat 4,so that invention comprises a the proportions of the combustible mixtureits ends with supports 7 on which the generator tube 8 is carrie-d.Liquid fuel is introduced into the generator tube through the conduit 9(the fuel being introduced-under pressure) and is vaporized in thegenerator. The vvaporous fuel produced in the generator, dischargestherefrom through the conduit 12 which depends vertically from the tube8 at the end thereof, remote from the fuel inlet conduit. The conduit 12is provided witha discharge nozzle'13 which is substantially axiallyalined with the throat 4 and the flow of vaporous fuel through thisnozzle is controlled by a needle .valve 14. "lhe needle valve isprovidedon its end with a thin blade 15 extending through the aperturein the nozzle, so that in the event the aperture becomes plugged withsolid material, the rotation of the needle valve will cause the blade 15to ream the solid material from the nozzle, thus restoring the nozzle tooperative condition.

From the mixing chamber 2, fuel passes into the fuel chamber 16, whichis integral with the mixing chamber and which is in communication withthe mixing chamber throughout its length. rfhe fuel from the mixingchamber-also passes to a second fuel chamber 17, which is spaced-fromthe fuel chamber 16-and arranged in side-by-side re;

lation therewith. The' mixing chamber 2 is erably provided with legs 23for supporting them above the base or supporting element* on which theyare placed, to permit the free.

. burner to provided at the end remote from the wall 3 with a pocket 18into'the side wall of which is screwed a large fuel conducting pipe 19which is secured to and in communication with the fuel chamber 17. Byrotating the fuel chamber 17 about the axis of the pipe 19, the spacingof the two fuel chambers 16 and 17 may be varied, thereby permitting thebe adjusted to properly fit in any desired installation. The fuelchambers 16 and 17 are preferably'provided with lateral fuel releaseapertures 21, and 22, so that the ames of fuel are directed laterallyfrom the fuel chambers. `These-apertures are preferably arranged on bothsides of each fuel chamber so that eight rows of flames are produced,four .of the rows between the two fuel chambers 16 and 17. These twochambers'are spaced apart and there is a free air space between them,permitting the free passage of air .to the fuel release apertures on theadjacent sldes of the fuel chambers .to support the combustion of thefuel issuing from these apertures. The side walls of the chambers 16 and17 are preferably vertical to permit the free access of air to theflames issuing from .the apertures. The fuel chambers are also pi'feflow of air around the fuel chambers, to p rovide for perfect combustionof the issuing lfuel..

. Each fuel chamber is provided with a top wall 24 havingelongatedpassages therein of, less width than the fuel chamber. .Ar-

ranged on the top wall 24 is a gas release aperture bar 25 havingelongated passages 26 therein adapted to register with the elongated.passages 27 in the wall 24.v The-bar 25 is provided with a plurality ofspaced teeth 28, these on the top and bottom surfaces of the bar, andthese teeth cooperate with the wall 24 and the top -plate 29 to form aplurality of gas release apertures 31.

being formed teeth being preferably formed Dueto the of the bar 25 andthe plates or walls 24 and l the chamb'er. Should the passages be madeshallow, the width would have to be made very small in order to preventbackfire but by increasing the depth of the passages, the Width thereof`may also be increased, permitting the discharge of a larger amount ofgas, without the liability of backfire. The top vplate 29 and the bar 25and the top wall24 are secured together and to the fuel chamber byl thebolts 32 extending downward through the fuel chamber. rlhe generator 8,in which the liquid fuel is vaporized by the heat produced by thecombustion of the vaporized fuel, is preferably placed above andadjacent to the fuel release apertures 4of one of the fuel chambers, sothat the generator 8 is out of the path of the flames issuing from Dueto.

the burner. The generator is thus heated by radiant heat only and not bydirect contact with the flames. perature of the generator is kept lowerthan if it came into direct contact with the flames and as'a resultcarbonization of the fuel in the generator 8 is greatly reduced. SomeTherefore, the temcarbonization will occur.' however, and in order toprevent the solid particles from entering the vapor fluid conduit 12,such conduitis provided with an extension 33 which extends upward intothe generator 8 to a point adjacent the top thereof so that solidparticles accumulating in the generator 8 will not have-a tendency topass into the tube 12.`

The generator is provided at its fuel inlet end with a fuel distributorwhich operates to control the'ow of liquid fuel and to heated. in largemasses;v 'This distributor preferably comprises an integral structureconsisting of a plurality of spaced metallic discs 34, the discs beingintegral with the fdistribute such fuel so that it will not beintervening' studs. The discs are somewhat generator tube 8, s permittedto flow and is held in position -therein byia s wire 35 which projectsfrom the endo'f distributor into contact withan abutment, such as theextension 33, in the tube The tube 8 will in time become fouled withcar-v smaller in diameter than'the interior of the v 'at the liquid fuelis vuw, dises The die tr1butor is unattached'f tothe generator tu A12e,v

exposing the end of the distributor. At

such end, the distributor is provided lwith a= screw socketand asuitable removing tool, such as a screw-eye 38 may be screwed into thesocket for the purpose o-f withdrawing the distributor. In the eventthat the carbon in the generator has caked and the distributor is heldtight, a blow, as by a hammer, on the eye 38 will free the distributorin the tube so that it may be withdrawn. The wire is sui'liciently`flexible to permit the distributor. to move inward under the blow.

For the purpose of initially starting the b burner from a coldcondition, a trough 37 is provided on the top wall of the mixing chamber2 and this trough is directly below thev generator 8. This trough isusually filled with absorbent material, such as asbestos, and bysaturating this material with gasoline or-kerosene and igniting thesaturated material, sufficient heat is developed to raise thetemperature of the generator to a sufficient degree to vaporize theliquid" fuel therein and this vapor then passes into the mixing chamberand ou.'y cf the fuel release apertures, where it is ignited by the.fiame rising from the saturated material in the trough 37. Vhen the twofuel chambers 16 and 17 are spaced apart aconsiderable distance, thefuel issuing from the release apertures of the burner 17 may not beignited by the flames from the burner 16, and

- to insure the ignition of the fuel being discharged from the burner17, I have provided a pilot light on lthe burner 17. This pilotcomprises a small trough 38 on the top wall of the fuel chamber 17,which. trough is filled with an absorbent material such as asbestos.Before the burner is initially started this absorbent material issaturated with a fuel such as" gasoline or kerosene and the fuel isignited. This fuel burns in the trough 38 until fuel is discharged fromthe fuel releaseapertures of the burner and then such discharging fuelis ignited by the .flame of the pilot burner.

I claim:

1. In a gaseous fuel burner, a mixing chamber and a pair of longitudinalspaced parallel fuel chambers provided withfuel release apertures,communicating with the mixing chamber, the spacing between said chambersbeing adjustable to vary the width of the burner.

2. In a gaseous fuel burner, a mixing chamber, a longitudinal fuelchamber provided with fuel release apertures Yfixed thereon andcommunicating with the fuel 4charnber, a second longitudinal fuelchamber provided with fuel release apertures, spaced from said firstfuel chamber and meansl adjustably connecting the second fuel chamberwith the mixing chamber. whereby the distance between the two fuelchambers may be varied.

3. .In a gaseous fuel burner. a mixing chamber a longitudinal fuelchamber provided with fuel release apertures, communieating with themixing chamber, a second longitudinal fuel chamber provided with fuelrelease-apertures, spaced from and disposed in parallel relation to saidfirst fuel chamber in a horizontal plane, there being a clear open spacebetween said fuel chambers to permit the passage of air between saidchambers and means connecting the second fuel chamber with the mixingchainer and permitting relative rotation therebetween.

4. In a gaseous fuel burner, a mixing chamber, a longitudinal fuelchamber provided'with fuel release apertures, communieating with themixing chamber. asecond longitudinal fuel chamber provided with fuelrelease apertures` spaced from and disposed in parallel relation to saidfirst fuel chamber, there being a clear open space be# .tween said fuelchambers to permit the pas- 'videdwith fuel release apertures, the twochambers being arranged side by side and a connecting pipe secured toone chamber adjacent one end thereof and screwed intol the other chamberat the adjacent end thereof, said pipe being enteredinto the latterchamber for a sufficient distance to permit variation in thespacing ofthe two chambers without breaking the connection between them.

6. ln a gaseous fuel burner. anelongated mixing chamber. an elongatedfuel chamber provided with fuel release apertures, formed integral withthe mixing chamber and in' communication therewith, means forintroducing fuel into one end of the mixing chamber, a second elongatedfuel chamber provided with fuel release apertures, arranged at the sideof and spaced from the first fuel chamber and an adjustable conduitconnecting the end of the mix'ing chamber remote from the fuelintroducing means, with the second fuel chamber whereby the distance tbetween said chambers may be varied.

' 7. In a gaseous fuel burner, a pair of connected fuel chambers, eachprovided with fuel release apertures, spaced apart in side bysiderelation to permit theipassage of air upward between the chambers tothe fuel release apertures and legs for supporting the bottoms of thechambers above the element on which they -are supported. to permit thefree4 passage of air under the chambers and means for varying thedistance between said chambers.

the chambers being 8. In a. gaseous fuel burner, a fuel chamher having anarrow, elongated fuel .discharge passage in its upper wall, a barhaving a longitudinal series of passages there- 5 thru registering withsaid fuel discharge passage, the spaces between the passages of saidseries being oczupied by transverse bridges, teeth on the upper andlower fases of said bar coinciding with said bridges, the teeth l0 onthe lower surface engaging the upper wall and forming therewith aplurality of fuel release apertures corresponding with the passages ofsaid longitudinal series, and a plate` overlying the bar and forming aplurality o fuel release apertures correspond- 15 ing with the passagesof said longitudinal series. Y In testimony whereof, I have hereunto setJESSE E. KRESKY.

my hand..

